Big Ideas Math: Modeling Real Life, Grade 6
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3. Properties of Addition and Multiplication
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Exercise 22 Page 219

Changing the order of the terms does not change the sum.

Commutative Property of Addition

Practice makes perfect
To identify the Property of Real Numbers being demonstrated by the given equation, we should first identify the operation being performed. x+7.5=7.5+x In this case, the terms are being added. The equation shows that changing the order of the terms being added does not change the sum. This is the Commutative Property of Addition.

Extra

The Other Properties

In this exercise, we saw an example of the Commutative Property of Addition. Now, let's review the other Properties of Real Numbers.